Only a few months ago, Henry Kissinger was dancing with Stephen Colbert in a funny bit on the latter's Comedy Central show. But for years, the former secretary of state has sidestepped judgment for his complicity in horrific human rights abuses abroad, and a new memo has emerged that provides clear evidence that in 1976 Kissinger gave Argentina's neo-fascist military junta the "green light" for the dirty war it was conducting against civilian and militant leftists that resulted in the disappearance -- that is, deaths -- of an estimated 30,000 people.

In April 1977, Patt Derian, a onetime civil rights activist whom President Jimmy Carter had recently appointed assistant secretary of state for human rights, met with the US ambassador in Buenos Aires, Robert Hill. A memo recording that conversation has been unearthed by Martin Edwin Andersen, who in 1987 first reported that Kissinger had told the Argentine generals to proceed with their terror campaign against leftists (whom the junta routinely referred to as "terrorists"). The memo notes that Hill told Derian about a meeting Kissinger held with Argentine Foreign Minister Cesar Augusto Guzzetti the previous June. What the two men discussed was revealed in 2004 when the National Security Archive obtained and released the secret memorandum of conversation for that get-together. Guzzetti, according to that document, told Kissinger, "our main problem in Argentina is terrorism." Kissinger replied, "If there are things that have to be done, you should do them quickly. But you must get back quickly to normal procedures." In other words, go ahead with your killing crusade against the leftists.